<template>
  <h1>循环指令</h1>
  <ul>
<!--  item从1开始，每执行一次，item的值+1，一直到数字n  -->
<!--  v-for的效果：执行5次，生成5个li，里面是数字1~5  -->
    <li v-for="item in 5">{{item}}</li>
  </ul>
  <ul>
    <li v-for="item in productArr">{{item}}</li>
  </ul>
  <table border="1px">
    <tr>
      <th>编号</th>
      <th>种类</th>
      <th>价格</th>
      <th>库存</th>
      <th>操作</th>
    </tr>
    <tr v-for="(item, index) in productArr">
      <td>{{index+1}}</td>
      <td>{{item.title}}</td>
      <td>{{item.price}}</td>
      <td>{{item.num}}</td>
      <td><button @click="del(index)">删除</button></td>
    </tr>
  </table>
</template>

<script setup>
import {ref} from "vue";

const productArr = ref([
  {title:'苹果',price:30,num:10},
  {title:'苹果',price:30,num:10},
  {title:'香蕉',price:40,num:100},
  {title:'香蕉',price:40,num:100},
  {title:'葡萄',price:20,num:80},
  {title:'葡萄',price:20,num:80},
  {title:'桃子',price:10,num:60}
])
const del = (index) => {
  if (confirm('是否要删除？')){
    productArr.value.splice(index,1);
  }
}
</script>


<style scoped>

</style>